1 /**************************************************************************
3 * Copyright © 2010 Jakob Bornecrantz
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
24 **************************************************************************/
34 /* pipe_*_state structs */
35 #include "pipe/p_state.h"
37 #include "pipe/p_context.h"
39 #include "pipe/p_screen.h"
41 #include "pipe/p_defines.h"
42 /* TGSI_SEMANTIC_{POSITION|GENERIC} */
43 #include "pipe/p_shader_tokens.h"
44 /* pipe_buffer_* helpers */
45 #include "util/u_inlines.h"
47 /* constant state object helper */
48 #include "cso_cache/cso_context.h"
50 /* u_sampler_view_default_template */
51 #include "util/u_sampler.h"
52 /* debug_dump_surface_bmp */
53 #include "util/u_debug_image.h"
54 /* util_draw_vertex_buffer helper */
55 #include "util/u_draw_quad.h"
56 /* FREE & CALLOC_STRUCT */
57 #include "util/u_memory.h"
58 /* util_make_[fragment|vertex]_passthrough_shader */
59 #include "util/u_simple_shaders.h"
60 /* to get a hardware pipe driver */
61 #include "pipe-loader/pipe_loader.h"
65 struct pipe_loader_device
*dev
;
66 struct pipe_screen
*screen
;
67 struct pipe_context
*pipe
;
68 struct cso_context
*cso
;
70 struct pipe_blend_state blend
;
71 struct pipe_depth_stencil_alpha_state depthstencil
;
72 struct pipe_rasterizer_state rasterizer
;
73 struct pipe_sampler_state sampler
;
74 struct pipe_viewport_state viewport
;
75 struct pipe_framebuffer_state framebuffer
;
76 struct pipe_vertex_element velem
[2];
81 union pipe_color_union clear_color
;
83 struct pipe_resource
*vbuf
;
84 struct pipe_resource
*target
;
85 struct pipe_resource
*tex
;
86 struct pipe_sampler_view
*view
;
89 static void init_prog(struct program
*p
)
91 struct pipe_surface surf_tmpl
;
94 /* find a hardware device */
95 ret
= pipe_loader_probe(&p
->dev
, 1);
98 /* init a pipe screen */
99 p
->screen
= pipe_loader_create_screen(p
->dev
);
102 /* create the pipe driver context and cso context */
103 p
->pipe
= p
->screen
->context_create(p
->screen
, NULL
, 0);
104 p
->cso
= cso_create_context(p
->pipe
, 0);
106 /* set clear color */
107 p
->clear_color
.f
[0] = 0.3;
108 p
->clear_color
.f
[1] = 0.1;
109 p
->clear_color
.f
[2] = 0.3;
110 p
->clear_color
.f
[3] = 1.0;
114 float vertices
[4][2][4] = {
116 { 0.9f
, 0.9f
, 0.0f
, 1.0f
},
117 { 1.0f
, 1.0f
, 0.0f
, 1.0f
}
120 { -0.9f
, 0.9f
, 0.0f
, 1.0f
},
121 { 0.0f
, 1.0f
, 0.0f
, 1.0f
}
124 { -0.9f
, -0.9f
, 0.0f
, 1.0f
},
125 { 0.0f
, 0.0f
, 1.0f
, 1.0f
}
128 { 0.9f
, -0.9f
, 0.0f
, 1.0f
},
129 { 1.0f
, 0.0f
, 1.0f
, 1.0f
}
133 p
->vbuf
= pipe_buffer_create(p
->screen
, PIPE_BIND_VERTEX_BUFFER
,
134 PIPE_USAGE_DEFAULT
, sizeof(vertices
));
135 pipe_buffer_write(p
->pipe
, p
->vbuf
, 0, sizeof(vertices
), vertices
);
138 /* render target texture */
140 struct pipe_resource tmplt
;
141 memset(&tmplt
, 0, sizeof(tmplt
));
142 tmplt
.target
= PIPE_TEXTURE_2D
;
143 tmplt
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
144 tmplt
.width0
= WIDTH
;
145 tmplt
.height0
= HEIGHT
;
147 tmplt
.array_size
= 1;
148 tmplt
.last_level
= 0;
149 tmplt
.bind
= PIPE_BIND_RENDER_TARGET
;
151 p
->target
= p
->screen
->resource_create(p
->screen
, &tmplt
);
154 /* sampler texture */
157 struct pipe_transfer
*t
;
158 struct pipe_resource t_tmplt
;
159 struct pipe_sampler_view v_tmplt
;
162 memset(&t_tmplt
, 0, sizeof(t_tmplt
));
163 t_tmplt
.target
= PIPE_TEXTURE_2D
;
164 t_tmplt
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
168 t_tmplt
.array_size
= 1;
169 t_tmplt
.last_level
= 0;
170 t_tmplt
.bind
= PIPE_BIND_RENDER_TARGET
;
172 p
->tex
= p
->screen
->resource_create(p
->screen
, &t_tmplt
);
174 memset(&box
, 0, sizeof(box
));
178 ptr
= p
->pipe
->transfer_map(p
->pipe
, p
->tex
, 0, PIPE_TRANSFER_WRITE
, &box
, &t
);
183 p
->pipe
->transfer_unmap(p
->pipe
, t
);
185 u_sampler_view_default_template(&v_tmplt
, p
->tex
, p
->tex
->format
);
187 p
->view
= p
->pipe
->create_sampler_view(p
->pipe
, p
->tex
, &v_tmplt
);
190 /* disabled blending/masking */
191 memset(&p
->blend
, 0, sizeof(p
->blend
));
192 p
->blend
.rt
[0].colormask
= PIPE_MASK_RGBA
;
194 /* no-op depth/stencil/alpha */
195 memset(&p
->depthstencil
, 0, sizeof(p
->depthstencil
));
198 memset(&p
->rasterizer
, 0, sizeof(p
->rasterizer
));
199 p
->rasterizer
.cull_face
= PIPE_FACE_NONE
;
200 p
->rasterizer
.half_pixel_center
= 1;
201 p
->rasterizer
.bottom_edge_rule
= 1;
202 p
->rasterizer
.depth_clip
= 1;
205 memset(&p
->sampler
, 0, sizeof(p
->sampler
));
206 p
->sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
207 p
->sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
208 p
->sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
209 p
->sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
210 p
->sampler
.min_img_filter
= PIPE_TEX_MIPFILTER_LINEAR
;
211 p
->sampler
.mag_img_filter
= PIPE_TEX_MIPFILTER_LINEAR
;
212 p
->sampler
.normalized_coords
= 1;
214 surf_tmpl
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
; /* All drivers support this */
215 surf_tmpl
.u
.tex
.level
= 0;
216 surf_tmpl
.u
.tex
.first_layer
= 0;
217 surf_tmpl
.u
.tex
.last_layer
= 0;
218 /* drawing destination */
219 memset(&p
->framebuffer
, 0, sizeof(p
->framebuffer
));
220 p
->framebuffer
.width
= WIDTH
;
221 p
->framebuffer
.height
= HEIGHT
;
222 p
->framebuffer
.nr_cbufs
= 1;
223 p
->framebuffer
.cbufs
[0] = p
->pipe
->create_surface(p
->pipe
, p
->target
, &surf_tmpl
);
225 /* viewport, depth isn't really needed */
230 float half_width
= (float)WIDTH
/ 2.0f
;
231 float half_height
= (float)HEIGHT
/ 2.0f
;
232 float half_depth
= ((float)FAR
- (float)NEAR
) / 2.0f
;
237 bias
= (float)HEIGHT
;
243 p
->viewport
.scale
[0] = half_width
;
244 p
->viewport
.scale
[1] = half_height
* scale
;
245 p
->viewport
.scale
[2] = half_depth
;
247 p
->viewport
.translate
[0] = half_width
+ x
;
248 p
->viewport
.translate
[1] = (half_height
+ y
) * scale
+ bias
;
249 p
->viewport
.translate
[2] = half_depth
+ z
;
252 /* vertex elements state */
253 memset(p
->velem
, 0, sizeof(p
->velem
));
254 p
->velem
[0].src_offset
= 0 * 4 * sizeof(float); /* offset 0, first element */
255 p
->velem
[0].instance_divisor
= 0;
256 p
->velem
[0].vertex_buffer_index
= 0;
257 p
->velem
[0].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
259 p
->velem
[1].src_offset
= 1 * 4 * sizeof(float); /* offset 16, second element */
260 p
->velem
[1].instance_divisor
= 0;
261 p
->velem
[1].vertex_buffer_index
= 0;
262 p
->velem
[1].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
266 const uint semantic_names
[] = { TGSI_SEMANTIC_POSITION
,
267 TGSI_SEMANTIC_GENERIC
};
268 const uint semantic_indexes
[] = { 0, 0 };
269 p
->vs
= util_make_vertex_passthrough_shader(p
->pipe
, 2, semantic_names
, semantic_indexes
, FALSE
);
272 /* fragment shader */
273 p
->fs
= util_make_fragment_tex_shader(p
->pipe
, TGSI_TEXTURE_2D
,
274 TGSI_INTERPOLATE_LINEAR
,
275 TGSI_RETURN_TYPE_FLOAT
,
276 TGSI_RETURN_TYPE_FLOAT
, false,
280 static void close_prog(struct program
*p
)
282 cso_destroy_context(p
->cso
);
284 p
->pipe
->delete_vs_state(p
->pipe
, p
->vs
);
285 p
->pipe
->delete_fs_state(p
->pipe
, p
->fs
);
287 pipe_surface_reference(&p
->framebuffer
.cbufs
[0], NULL
);
288 pipe_sampler_view_reference(&p
->view
, NULL
);
289 pipe_resource_reference(&p
->target
, NULL
);
290 pipe_resource_reference(&p
->tex
, NULL
);
291 pipe_resource_reference(&p
->vbuf
, NULL
);
293 p
->pipe
->destroy(p
->pipe
);
294 p
->screen
->destroy(p
->screen
);
295 pipe_loader_release(&p
->dev
, 1);
300 static void draw(struct program
*p
)
302 const struct pipe_sampler_state
*samplers
[] = {&p
->sampler
};
304 /* set the render target */
305 cso_set_framebuffer(p
->cso
, &p
->framebuffer
);
307 /* clear the render target */
308 p
->pipe
->clear(p
->pipe
, PIPE_CLEAR_COLOR
, &p
->clear_color
, 0, 0);
310 /* set misc state we care about */
311 cso_set_blend(p
->cso
, &p
->blend
);
312 cso_set_depth_stencil_alpha(p
->cso
, &p
->depthstencil
);
313 cso_set_rasterizer(p
->cso
, &p
->rasterizer
);
314 cso_set_viewport(p
->cso
, &p
->viewport
);
317 cso_set_samplers(p
->cso
, PIPE_SHADER_FRAGMENT
, 1, samplers
);
319 /* texture sampler view */
320 cso_set_sampler_views(p
->cso
, PIPE_SHADER_FRAGMENT
, 1, &p
->view
);
323 cso_set_fragment_shader_handle(p
->cso
, p
->fs
);
324 cso_set_vertex_shader_handle(p
->cso
, p
->vs
);
326 /* vertex element data */
327 cso_set_vertex_elements(p
->cso
, 2, p
->velem
);
329 util_draw_vertex_buffer(p
->pipe
, p
->cso
,
333 2); /* attribs/vert */
335 p
->pipe
->flush(p
->pipe
, NULL
, 0);
337 debug_dump_surface_bmp(p
->pipe
, "result.bmp", p
->framebuffer
.cbufs
[0]);
340 int main(int argc
, char** argv
)
342 struct program
*p
= CALLOC_STRUCT(program
);